LAN9211_0711 SMSC [SMSC Corporation], LAN9211_0711 Datasheet - Page 18
LAN9211_0711
Manufacturer Part Number
LAN9211_0711
Description
High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9211_0711.pdf
(146 pages)
- Current page: 18 of 146
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Revision 1.93 (11-27-07)
Crystal 1, Clock In
Auto-MDIX Enable
Wakeup Indicator
No Connect
Crystal 2
NAME
Reset
XTAL1/CLKIN
AMDIX_EN
SYMBOL
nRESET
XTAL2
PME
NC
Table 2.4 System and Power Signals
BUFFER
O8/OD8
TYPE
Oclk
(PU)
(PU)
lclk
IS
I
DATASHEET
18
High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX
NUM
PINS
1
1
1
1
1
1
External 25MHz Crystal Input. This pin can also
be connected to single-ended TTL oscillator
(CLKIN). If this method is implemented, XTAL2
should be left unconnected.
External 25MHz Crystal output.
Active-low reset input. Resets all logic and
registers within the LAN9211. This signal is
pulled high with a weak internal pull-up resistor.
Note:
When programmed to do so, is asserted when
the LAN9211 detects a wake event and is
requesting the system to wake up from the
associated sleep state. The polarity and buffer
type of this signal is programmable.
Note:
Enables Auto-MDIX. Pull high or leave
unconnected to enable Auto-MDIX, pull low to
disable Auto-MDIX.
No Connect. This pin must be left open.
The LAN9211 must be reset on power-
up via nRESET or following power-up
via a soft reset (SRST). The LAN9211
must always be read at least once
after reset, or upon return from a
power-saving state or write operations
will not function. See
"Detailed Reset Description," on
page 46
Detection of a Power Management
Event, and assertion of the PME
signal will not wakeup the LAN9211.
The LAN9211 will only wake up when
it detects a host write cycle (assertion
of nCS and nWR). Although any write
to the LAN9211, regardless of the data
written, will wake-up the device when
it is in a power-saving mode, it is
required that the BYTE_TEST register
be used for this purpose.
DESCRIPTION
for additional information
Section 3.11,
SMSC
Datasheet
LAN9211
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